B̄ → Xsγ in the CP violating MSSM

2016 ◽  
Vol 31 (30) ◽  
pp. 1650158
Author(s):  
Xiu-Yi Yang ◽  
Jing Nie ◽  
Tie-Jun Gao ◽  
Hong-Jie Yin
Keyword(s):  
Numerical Analysis ◽  
Standard Model ◽  
Branching Ratio ◽  
Supersymmetric Extension ◽  
Cp Asymmetry ◽  
The Standard Model ◽  
Minimal Supersymmetric Extension

Complete expressions of the [Formula: see text] and [Formula: see text] vertices are derived in the framework of minimal supersymmetric extension of the standard model. With some assumptions on parameters of the model, a numerical analysis of the supersymmetric contributions to the branching ratio and CP-asymmetry of [Formula: see text] is presented.

scholarly journals Bs,d0 → l+l− in the minimal gauged (B − L) supersymmetry

2016 ◽  
Vol 31 (16) ◽  
pp. 1650092 ◽  
Author(s):  
Tai-Fu Feng ◽  
Yu-Li Yan ◽  
Hai-Bin Zhang ◽  
Shu-Min Zhao
Keyword(s):  
Numerical Analysis ◽  
Gauge Symmetry ◽  
Standard Model ◽  
Branching Ratios ◽  
Supersymmetric Extension ◽  
The Standard Model ◽  
Minimal Supersymmetric Extension

Complete expressions of effective Hamilton for [Formula: see text][Formula: see text] are derived in the framework of minimal supersymmetric extension of the standard model with local [Formula: see text] gauge symmetry. With some assumptions on parameters of the model, a numerical analysis of the supersymmetric contributions to the branching ratios of [Formula: see text][Formula: see text] is presented.

scholarly journals ESTIMATING THE ANNIHILATION DECAY Bs → ργ WITH FACTORIZATION

2009 ◽  
Vol 24 (39) ◽  
pp. 3173-3181 ◽  
Author(s):  
M. R. AHMADY ◽  
F. MAHMOUDI
Keyword(s):  
Standard Model ◽  
Quark Model ◽  
Decay Mode ◽  
Branching Ratio ◽  
New Physics ◽  
Supersymmetric Extension ◽  
The Standard Model ◽  
Minimal Supersymmetric Extension

The branching ratio for the rare two-body Bs → ργ decay is calculated using the factorization assumption. This transition is dominated by the annihilation diagrams and, in principle, prone to receiving substantial contributions from new physics. We estimate Br (Bs → ργ) ≈ 1.6 ×10-9 within the Standard Model and investigate the sensitivity of this decay mode to the effects of two new physics scenarios: vector quark model and supersymmetry. Our results indicate that the shift in branching ratio is at most around 10% with the addition of vector quarks and is negligibly small in the constrained minimal supersymmetric extension of the Standard Model.

TWO-BODY RADIATIVE GLUINO DECAYS

1988 ◽  
Vol 03 (16) ◽  
pp. 1561-1568 ◽  
Author(s):  
ERNEST MA ◽  
GWO-GUANG WONG
Keyword(s):  
Standard Model ◽  
Branching Fraction ◽  
Color Singlet ◽  
Supersymmetric Extension ◽  
Neutral Fermion ◽  
The Standard Model ◽  
Gluino Decays ◽  
Minimal Supersymmetric Extension

A gluino can decay into a color-singlet neutral fermion [Formula: see text] by radiating off a gluon. We study this process in a minimal supersymmetric extension of the standard model. A significant branching fraction is possible depending on how much [Formula: see text] overlaps with the Higgs fermion which couples to the t quark and the mass of the t quark itself.

DIRECT VERSUS INDIRECT SEARCHES FOR NEUTRALINO DARK MATTER

1992 ◽  
Vol 07 (09) ◽  
pp. 733-747 ◽  
Author(s):  
A. BOTTINO ◽  
V. DE ALFARO ◽  
N. FORNENGO ◽  
A. MORALES ◽  
J. PUIMEDÓN ◽  
...  
Keyword(s):  
Experimental Data ◽  
Dark Matter ◽  
Standard Model ◽  
Coupling Strength ◽  
Supersymmetric Extension ◽  
Set Constraints ◽  
The Standard Model ◽  
Search Data ◽  
Relic Abundance ◽  
Minimal Supersymmetric Extension

Direct search for neutralino dark matter is analyzed in the framework of the minimal supersymmetric extension of the standard model, using a realistic evaluation of the neutralino relic abundance which also includes radiative corrections to the Higgs masses. Relevance of the present (Ge detectors) experimental data to set constraints on the parameters of the model is discussed and expectations for future experiments which involve neutralino-nucleus coherent processes are investigated. These results are compared to those obtained in a previous paper from indirect search data. In the present analysis particular attention is paid to the theoretical uncertainties due to the different estimates of the Higgs-nucleon coupling strength.

scholarly journals IMPACT OF THE SUSY DECAYS ON THE SEARCH FOR THE MSSM HIGGS BOSONS AT THE LHC

1999 ◽  
Vol 14 (05) ◽  
pp. 359-368 ◽  
Author(s):  
A. DJOUADI
Keyword(s):  
Standard Model ◽  
Branching Ratios ◽  
Higgs Bosons ◽  
Hadron Colliders ◽  
Supersymmetric Extension ◽  
Decay Channels ◽  
Decay Modes ◽  
The Standard Model ◽  
The Impact ◽  
Minimal Supersymmetric Extension

In the context of the minimal supersymmetric extension of the Standard Model, we discuss the impact of the decays of the neutral Higgs bosons into supersymmetric particles, charginos/neutralinos and sfermions. We show that these decay modes could be dominant, when they are kinematically accessible, thus strongly suppressing the branching ratios for the decay channels which are used to detect the Higgs bosons at hadron colliders. These SUSY decay modes should therefore not be overlooked in the search for the Higgs particles at the LHC.

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